56, 4 
Ames and Quisumbing: Philippine Orchids, V 461 
Genus PHALAENOPSIS Blume 
PHALAENOPSIS MARIAE Burbidge var. ALBA Ames and Quis. var. nov. Plate 2, figs- 
3 and 4; Plate 4, figs. 9 to 17; Plate 7, fig. 2. 
Haec varietas floribus omnino albidis haud striatis a P. Mariae 
differt. 
In habit and in leaves similar to the species. The leaves, 
shining on the upper surface, dark green, 22.5 to 24 cm long, 
5.5 to 7.7 cm wide. Scapes slender, sparingly branched, few- 
flowered, 10 to 20 cm long. Flowers odorless, 5 to 8 mm dis¬ 
tant, 3.5 to 4 cm across, without bars and entirely pure white 
except at their apices which are light green-yellow and the inner 
basal portion of the lateral lobes of the labellum which is em¬ 
pire yellow. Pedicellate ovary white, about 12 mm long. Lat¬ 
eral sepals spreading, obliquely elliptic-ovate, obtuse, apiculate, 
1.9 to 2 cm long, 1 to 1.1 cm wide. Dorsal sepal narrower, 
erect, broadly lanceolate-elliptic, obtuse, 1.9 to 2 cm long, 8.5 
to 9 mm wide. Petals lanceolate-elliptic, obtuse, 1.7 to 1.8 cm 
long, 8.5 to 9 mm wide. Labellum fleshy, 3-lobed; lateral lobes 
erect in natural position, obliquely subquadrate-oblong, incurved 
towards the column, white with empire yellow stain on the in¬ 
ner basal portion, 5 to 6 mm long; middle lobe pure white, 
spatulate-obovate, 11 to 12 mm long, 7 to 8 mm wide at the 
widest portion, prominently keeled in the middle longitudinally, 
the keel conspicuously clothed with hairs on the anterior part. 
Column pure white, about 7 mm long. 
Luzon, Manila, Bureau of Science orchid house, Bur. Sci. 
85707 Quisumbing, June 21, 1933. The description is based 
upon a living plant (now growing in the Bureau of Science 
orchid house), which was donated to the junior author by 
Mr. L. H. Phillips, who collected it from the hills of Bukidnon, 
Mindanao. 
The variety is characterized by having pure white flowers 
with a complete absence of bars on the sepals and petals. 
The plate in Bot. Mag. t. 6964 shows a very similar middle 
lobe of the lip, and the length of the pedicellate ovary is va¬ 
riable in specimens in the herbarium of the senior author. 
Genus AERIDES Loureiro 
AERIDES LAWRENCIAE Reichb. f. var. FORTICHII Ames and Quis. var. nov. Plate 2, 
flK. 2. 
Habitu speciei similis, floribus albidis differt. 
A variety resembling the species in habit and general features. 
Leaves 15 to 22.5 cm long, 2.8 to 3.3 cm wide. Inflorescence 
